Spatial and Temporal Evolution Patterns of Droughts in China over the Past 61 Years Based on the Standardized Precipitation Evapotranspiration Index
文献类型：期刊论文
| 作者 | Yang, Yunrui1,2; Dai, Erfu3,4; Yin, Jun5; Jia, Lizhi3,4; Zhang, Peng3,4; Sun, Jianguo1,2 |
| 刊名 | WATER
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 16期号:7页码:1012 |
| 关键词 | drought cycle multi-scale SPEI Mann-Kendall China |
| DOI | 10.3390/w16071012 |
| 产权排序 | 4 |
| 文献子类 | Article |
| 英文摘要 | Based on the data of 2254 daily meteorological stations in China from 1961 to 2021, this study calculated the standardized precipitation evapotranspiration index (SPEI) of the national multi-time scale by using the FAO Penman-Monteith model to quantify the changes in dry and wet conditions. The Mann-Kendall mutation test, wavelet analysis, and other methods were used to study the spatial pattern and temporal evolution of drought. The results showed: (1) In the past 61 years, there were obvious spatial and temporal differences in drought in China, and the interannual variation in drought severity in SPEI-1, SPEI-3, and SPEI-12 gradually decreased at a rate of 0.005/10a, 0.021/10a, and 0.092/10a, respectively. (2) The time point of dry and wet mutation was 1989 according to the MK mutagenicity test. (3) Wavelet analysis showed that the drought cycle on the annual scale and the seasonal scale was consistent, and the main period was about 30 years. (4) In the past 61 years, the drought intensity of different degrees in China has shown a weakening trend, and the drought intensity reached the highest value in 61 years in 1978, at 1836.42. In 2020, the drought intensity was the lowest, at 261.55. (5) The proportion of drought stations has shown a decreasing trend. The proportion of drought-free stations has fluctuated greatly, ranging from 42.12% to 89.25%, with 2020 being the highest. This study provides a scientific basis for further research on the causes and coping strategies of drought and is of great significance for strengthening China's drought monitoring, early warning ,and adaptation capabilities. |
| WOS关键词 | CLIMATE-CHANGE ; RISK ; VULNERABILITY ; SPI |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001201066900001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/204808]  |
| 专题 | 拉萨站高原生态系统研究中心_外文论文 |
| 作者单位 | 1.Lanzhou Jiaotong Univ, Sch Surveying Mapping & Geoinformat, Lanzhou 730070, Peoples R China 2.Natl Local Joint Engn Res Ctr Geograph State Monit, Lanzhou 730070, Peoples R China 3.Gansu Prov Geog State Monitoring Engn Lab, Lanzhou 730070, Peoples R China 4.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Simulat, Inst Geog Sci & Resources, Lhasa Plateau Ecosyst Res Stn, Beijing 100101, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Lhasa Tibetan Plateau Sci Res Ctr, Lhasa 850000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Yunrui,Dai, Erfu,Yin, Jun,et al. Spatial and Temporal Evolution Patterns of Droughts in China over the Past 61 Years Based on the Standardized Precipitation Evapotranspiration Index[J]. WATER,2024,16(7):1012. |
| APA | Yang, Yunrui,Dai, Erfu,Yin, Jun,Jia, Lizhi,Zhang, Peng,&Sun, Jianguo.(2024).Spatial and Temporal Evolution Patterns of Droughts in China over the Past 61 Years Based on the Standardized Precipitation Evapotranspiration Index.WATER,16(7),1012. |
| MLA | Yang, Yunrui,et al."Spatial and Temporal Evolution Patterns of Droughts in China over the Past 61 Years Based on the Standardized Precipitation Evapotranspiration Index".WATER 16.7(2024):1012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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